Gall Bladder - Anatomy & Physiology

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Structure

Location of the Canine Gallbladder - Copyright RVC 2008

• Lies between the right medial and quadrate lobes of the liver

• Partly attached

• Partly free

Function

• Stores bile

• Concentrates bile by absorption through the folded mucosal wall

Innervation

• Parasympathetic nerves

Histology

Histology of the Guinea-pig Gallbladder - Copyright RVC 2008

• Highly folded mucosa

• Reduced submucosa

• No lamina muscularis

• Simple columnar epithelium

Species Differences

Equine

• The horse has no gallbladder

Canine

• In some dogs, the gallbladder is so deeply embedded it makes contact with the diaphragm and contacts the pareital surface

Rodents

• Rats do not have a gallbladder

Links

Pathology of the Gall Bladder